12
3700 Osuna Road NE
Suite 711
Albuquerque, NM 87109
www.sandia.aero
NUM NAME
I/O
DESCRIPTION
P1-9
VOR TO
Input
VOR TO/FROM differential input. TO positive for TO indication
at 40mV
P1-10
VOR
FROM
Input
VOR TO/FROM differential input. FROM positive for FROM
indication at -40mV
P1-11
VLOC
LEFT
Input
VLOC LEFT/RIGHT differential. LEFT positive for left needle
movement. 150mV for Full Scale (5 dots)
P1-12
VLOC
RIGHT
Input
VLOC LEFT/RIGHT differential. RIGHT positive for right needle
movement. -150mV for Full Scale(5 dots)
P1-13
GS UP
Input
Glideslope UP/DOWN differential. UP positive for up needle
movement. 150mV for full scale(5 dots)
P1-14
GS DOWN
Input
Glideslope UP/DOWN differential. DOWN positive for down
needle movement. -150mV for full scale(5dots)
P1-15
GS +FLAG
Input
Glideslope Flag differential. Positive for needle active at 125mV
P1-16
GS -FLAG
Input
Glideslope Flag differential return.
P1-17
GPS ANN
Input
Active Low for GPS annunciation
P1-18
VLOC Ann
Input
Active low for VLOC annunciation
P1-24
NAV ANN
Input
Active low for NAV annunciation
P1-25
BC ANN
Input
Active low for BC (back course) annunciation
P1-19
A/C PWR
Input
10-32Vdc. Diode OR’d with P1-20
P1-20
A/C PWR
Input
Alternate Power input Diode OR’d with P1-19
P1-21
GND PWR
Input
Power Return
P1-22
RS232 RX
Input
DNC
P1-23
RS232 TX
Output
DNC
Table 1- Electrical Pin-Out
